{"id":"CVE-2026-80156","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-80156","generatedAt":"2026-10-28T03:38:58.374Z","title":"Lantronix SLC8000 before firmware v9.7.0.5, SLC9000 before firmware v9.7.0.2, EMG8500/EMG7500 before firmware v9.7.0.1, and all firmware versions of SLB882/SLCx-03/SLCx-02 contain a path traversal vulnerability in the web management portal upload…","description":"Lantronix SLC8000 before firmware v9.7.0.5, SLC9000 before firmware v9.7.0.2, EMG8500/EMG7500 before firmware v9.7.0.1, and all firmware versions of SLB882/SLCx-03/SLCx-02 contain a path traversal vulnerability in the web management portal upload endpoint that allows authenticated attackers to write arbitrary data to any location on the device's filesystem, leading to remote code execution. The upload filename validation strips backslash characters but does not subsequently check for forward slashes when a backslash is detected; by supplying a filename containing both characters an attacker writes outside the intended upload directory to any writable path. Attackers can use this vulnerability to achieve complete loss of confidentiality, integrity, and availability on the affected device and potentially impact downstream serial-connected devices.","published":"2026-09-22T16:18:02.000Z","lastModified":"2026-09-24T20:17:32.000Z","status":"Awaiting Analysis","sourceIdentifier":"disclosure@vulncheck.com","cvss":{"version":"4.0","score":9.4,"severity":"CRITICAL","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-22"],"affected":[],"epss":{"score":0.00697,"percentile":0.52844,"date":"2026-10-27","history":[{"date":"2026-09-23","score":0.01018,"percentile":0.61892}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.70%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-09-22T16:18:02.000Z","detail":{"score":"9.4","severity":"CRITICAL","publishedAt":"2026-09-22T16:18:02.083Z"},"summary":"New CVE, critical severity (CVSS 9.4)."}],"references":[{"url":"https://revrb.net/2026/09/21/revrb-lantern.html","source":"disclosure@vulncheck.com"},{"url":"https://ts.lantronix.com/ftp/SLC9000/9.7.0.2R1/","source":"disclosure@vulncheck.com"},{"url":"https://ts.lantronix.com/ftp/emg/EMG_7500/9.7.0.1R2/","source":"disclosure@vulncheck.com"},{"url":"https://ts.lantronix.com/ftp/emg/EMG_8500/9.7.0.1R2/","source":"disclosure@vulncheck.com"},{"url":"https://ts.lantronix.com/ftp/slc8000/9.7.0.5R2/","source":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/lantronix-autonomous-out-of-band-devices-arbitrary-file-write-via-upload-filename-validation-bypass","source":"disclosure@vulncheck.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-80156","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}